Teletypewriter projector



Nov. 15, 1938. V G E, ATK NS 2,136,602

TELETYPEWRITER PROJECTOR Filed Aug. 22, 1956 6' Sheets-Sheet 1 24 as I l NEW YORK S'IDOK nxnumar.

CONDITION sn'rmnr msmuer0u-ms FEDERAL RESERVE BDARD'S CONDITION sm'rzmm' 0? mm REPORTING MEMBER BANKS m 91mm CITIES OF FEB. 14-, SHOWS INCREASES FOR THE WEEK 01- 207,000,000 AND 1m 115mm DEPOSITS OE 105,000,000

[NRESBRVE BALANCES WITH FEDERAL RESERVE BANKS Am) $10,000,000 m LOANS AND zfivzs'msn'rs, AND A menus or 28,000,000 IN TIME DEPOSITS.

MEMBER 13;.

\m. FOR THAT VACATION CRUISE I 5;. 13 OFFICES IN 9 PAR mazsmvz BALANCES WITH ERALRESEKVE B '7 $10.0oqooo 1;: news AND INVESTMENTS, AND A DEREA5E OF /5 00.000 m TIME ma Bosrrs.

LDANS on swam-res vacuum SIJJOO'OQOAT REPORTING 0 3/ MEMBER BANKS m IRE. NEW vonxgjgig 2 [5 7 7-. ,l/ 7 Mn //v VENTOR By GE. A TK/NS j NW A T TO/ZNEY Nov. 15, 1938. G. ATK|N$ 2,136,602

TELETYPEWRITER PROJECTOR Filed Aug. 22, 1936 6 Sheets-Sheet 2 INTOR By 6f. A TK/NS A TTORNEV Nov. 15, 1938. G. E. ATKINS TELETYPEWRITER PROJECTOR 6 Sheets-Sheet 5 Filed Aug. 22. 1936 FIG. ll

INVENTOR' G.E.A TK/NS Br 2 ATTORNEY Nov. 15, 1938. a. E. ATKINS TELETYPEWRITER PROJECTOR Filed Aug. 22. 1936 6 Sheets-Sheet 4 //v VENTOR G. EA TK/NS Nov. 15, 1938. G. E. ATKINS TELETYPEWRITER PROJECTOR 6 sheets-sheet 6 Filed Aug. 22. 1936 INVENTOR G. E. A TK/NS j #JM Patented Nov. 15, 1938 UNITED STATES PATENT OFFICE TELETYPEWRITER raomcron' Application August 22, 1936, Serial No. 97,369

12 Claims.

This invention relates to an exhibiting device and, more particularly, to means for projecting simultaneously material from more than one source upon a single screen.

It is an obejct of this invention to concurrently project material from more than one source upon a single screen by means of a single source of illumination.

It is another object of this invention to concurrently project more than one type of material upon a single screen by means of a single projector.

Still another object of the invention is to provide a teletypewriter projector with a. plurality of display cards and means for intermittently superimposing them upon the teletypewriter stationery at the projection point.

A further object of the invention is to provide a teletypewriter projector with an improved storage device for storing a plurality of display cards.

Another object is to supply a teletypewriter projector with an improved escapement mechanism for releasing a plurality of display cards seriatim from their storage magazine.

An additional object is to furnish a teietype writer projector with a plurality of display cards and an improved device for shifting the cards from their storage magazine to the projection point and back again.

These and other objects of the invention are attained by means of an improved projector.

For purposes of explanation, this projector will be described with reference to its application to a news-advertising projector. However, it is to be understood that the invention is not to be limited to a news-advertising projector, but is capable of wide application. In the application of the invention to a news-advertising projector, the news is typed upon page stationery by a page teletypewriter. The typed page stationery is fixedly located at the projection point of the projector and the news, which constitutes the primary display material, is continuously projected onto the screen. Thus, it may be said that the primary display material is continuously located at the projection point.

The advertising material is printed on a pack of display cards mounted on trunnions and kept in a storage magazine. The cards, which constitute the secondary display material, are re: leased one by one from the storage magazine, where they are normally located, by an escapement mechanism and are intermittently taken seriatim to the projection point via channeled guides by conveying means including a pair of reciprocating arms driven by an eccentric cam which is, in turn, drivenby a motor. At the projection point, thecards are intermittently and momentarily superimposed across a portion of the face of the news material. A cam, operated by a lever, is provided on each side for pressing a superimposed card firmly in place over the news material so that the card will be in focus and will not vibrate.

These and other features of the invention will be found in the following detailed description of the invention with reference to the drawings in which:

Fig. l is a side view of the projector as a whole with part of its side broken away to show various parts of the projecting and card shifting mechanism;

Fig. 2 illustrates the screen of the projector with news material projected thereon;

Fig. 3 represents the screen when an advertising card, superimposed over the top portion of v the news material, is projected thereon;

. Fig. 4 is a side view of the main parts of the invention;

Fig. 5 is a perspective view of a portion of one of the reciprocating arms;

Fig. 6 is a front view of the projection field of the projector showing the plate against which the display cards are held;

Fig. 7 is a top view of the projection field shown as a front view in Fig. 6;

Figs. 8, 9, 10, and 11 show some of the positions assumed by the card-shifting mechanism during a cycle of. its operation;

Fig. 12 is a rear view of the main parts of the storage magazine and the card-shifting mechanism;

Fig. 13 shows a cardholder and the escapement mechanism in the release position Fig. 14' represents the position of the apparatus shown in Fig. 13 after the escapement mechanism has been operated to its hold position;

Fig. 15 is a side view of a modified form of the card-shifting mechanism; and

Figs. 16 and 1'7 represent portions of a modi fied arrangement for operating the escapement mechanism.

Referring now to Fig. 1 of the drawings, this figure discloses a side view of the news-advertising projector as a whole and shows only such portions of the teletypewriter mechanism, the advertising-card shifting mechanism, and the cptical'system as are necessary to illustrate the general functioning of the entire projector.

For a full understanding of the, operation of a complete news projector, to which the features of this invention may beapplied, reference may be had to Patent 2,046,697, issued to Harry .Pfannenstiehl on July 7, 1936. disclosing a projecting device, and also to Patent 1,904,164, issued on April 18, 1933 to S. Morton et al., which discloses a teletypewriter of the page printer type which is suitable forthe purposes of this ina general structure having a lower compartment I2 and an upper compartment 22, the latter supported directly above the former by means of four posts 2I. The lower compartment I2 contains the teletypewriter III, the advertising card storage magazine and shifting mechanism II, and the optical system I3. The upper compartment 22, which is open at the bottom, contains a large mirror 23 and the screen 24, which comprises the display area, of translucent material upon which is displayed the image of the teletypewriter page as well as the image of the advertising material whenever the latter is superimposed over a portion of the teletypewriter page.

The teletypewriter, or printer I 0, is of a type particularly suited for the present purpose in that it is so constructed that characters are visible right after they are printed thereby permitting the optical system I3 to observe the actual printing as readily as a typist can in the operation of an ordinary typewriter. The printer I0 carries a supply roller I4 of standard opaque paper I5 of sufficient width for page printing. The paper strip I5 is led about a platen I6 and passes behind the color ribbon (not shown) at the line of printing in the usual manner. Bar I1 represents one of the type hammers of the printer III in the printing position. After being printed upon, paper I5 passes through the projection field at the projection point of the projector, and is then wound on the return, or takeup roller I8. The driving motor for the teletypewriter I0 and. the means by which motion is imparted to the rollers I4 and I8 has not been shown in this figure for the sake of simplicity.

The advertising card storing and shifting mechanism II comprises a card storage magazine 25, an escapement mechanism 49, and a pair of reciprocating arms one of which, arm 21, is shown in this figure. The arms 21 are actuated by an eccentric cam 28 which in turn is driven by an independent motor 29. The downward motion of the reciprocating arms 21 causes the escapement mechanism 49 to function and release an advertising card from the magazine 25. Upon the continued down-stroke of the arms 21 this released card is conveyed to the projection field of the projector at the projection point 30, the card being superimposed across a portion of the printed page I5.

After an interval determined by the speed of motor 29 and cam 28, the reciprocating arms 21 move upward and return the advertising card from the projection point 30 to storage magazine 25. Upon the subsequent down-stroke of arms 21 another card is released from the magazine 25 and brought down into the projection field at the projection point 30. As long as motor 29 keeps running, this cycle of operations continues, all of the cards in magazine 25 being displayed seriatim in continued rotation. The cam 28 and arms 21-21 and their associated apparatus thus comprise control means for controlling the projection of this secondary display material onto the display area, screen 24. The various mechanisms employed in card shifting and storage are fully illustrated in Figs. 4 to 17, inclusive, and a detailed description of their operation will be set forth hereinafter.

The optical system of the projector comprises a viewing mirror 3|, or other reflector, placed opposite the projection field at a 45 degree angle to this field, so that an inverted image of the field is reflected upward through the objective lens system 32 and through the glass lid 33 and is indicated in Fig. 1 by the dot-dash lines. This image is received by the large mirror 23 in the upper compartment 22. Mirror 23 is placed at a 45 degree angle with respect to the axis of the objective system 32 thus causing the image to be again inverted and projected, greatly enlarged, upon the translucent screen 24. Lamp 34, in the lower compartment I2, represents one of several lamps used as a light source for the optical system. For a detailed description of this optical system, reference may be had to the aforementioned Patent 2,046,697, issued to Harry Pfannenstiehl.

Figs. 2 and 3 are front views of the projector screen 24 enclosed by the frame 35. Fig. 2 illustrates a projected printed item, such as a newsitem, as it appears on the screen 24 during those intervals when no advertising card is in the projection field of the projector. Fig. 3 shows the same projected news-item as is illustrated in Fig. 2 but at a short interval of time later, the cardshifting mechanism I I of the projector having functioned in the meantime and released and conveyed an advertising card to the projection point 30 of the projector, superimposing this card over the upper half of the printed page I5. The color ribbon and guide 36 is visible, as shown in both Figs. 2 and 3, thus permitting the actual printing operations to be observed on the screen 24.

Referring now to Fig. 4, there is shown therein a side view of the main parts of the invention, disclosing in detail the card storing and shifting mechanism II together with such portions of the teletypewriter I0 as are required for a clear understanding of the manner in which the invention functions. The standard opaque paper strip I5 for the printer I8 is carried on the supply roll I4 and is led from here over a paper tension roller 9 and around the platen I6 to the printing point. At this point the paper passes behind the color ribbon (not shown) at the line of printing for being typed upon by the type hammers I1.

The paper strip I5 continues through the projection field of the projector (indicated between the dotted lines D, D) of the projector, riding in the guide channel of plate 19 which is located in the projection field in the space between platen I6 and roller 1 as shown in detail in Figs. 6 and '1. The paper is then led over the guide rolls 1 and 8, between the tension rolls 31 and 38, and is finally wound on the paper return, or take-up, roll I8. The motive power for this paper feed mechanism is indicated by driven pulley I, the motion of which is imparted to the aforementioned paper and guide rolls by pulley 2 and belts 3, 4, and 5.

The advertising card storing and shifting mechanism II is mounted on the frame 39 directly above the printer proper. Arm 21 is fastened to a shaft 40 which extends to the opposite side of the device at which point a second arm (arm 21 shown in Fig. 12), similar to arm 21 is fastened to shaft 40. A trunnion, or roller bearing, 4| is attached to arm 21 and is fitted into a groove, or channel, 42 cut into the eccentric cam 28. Cam 28 revolves on shaft 43 under power transmitted to this shaft by motor 29 through a set of reduction gears (not shown). centric cam 28 revolves it imparts an up and down reciprocating motion to the arm 21 as well as to the similar arm 21' which is fastened to the opposite end of shaft 40.

As the echolder becomes the advertising card itself.

Inthe preferred embodiment of the invention as shown herein, the advertising matter to be displayed. is, to facilitate its interchangeability, printed, painted, or stamped on cards of any suitable material which are then mounted on card holders, such as the holders 5i and hit shown in detail in Fig. 12. It should be understood, however, that the advertising matter may be placed directly on the card holder without the medium ofa card in which case the card The card holders are provided with a trunnion at each end, these trunnions riding in the channeled guide lit and the corresponding guide on the opposite side of the device. Card holder ill, as shown in Fig. 12, illustrates the manner in which its trunnions ill and 52' are mounted thereon.

The storing means, or storage magazine, tit and the channeled guides in which the card holder trunnions ride are formed by the side plates ti and ill, the connecting members tilt and M, and the corresponding oppositely lo cated side plates and connecting members on the other side of the device. The floating side plate ti is held in the proper position with re= spect to plate by the connecting member dd therebyforming the lower channel dd and the upper channel iii. The inside face of member it is slotted, as indicated at till, in line with the lower channel it to accommodate the full length of the card holder trunnions. Means for inserting and removing card holders from the maga sine lid is provided by slotting the upper end of side plate til to-form channel til. llhe connecting member ltd holds the upper ends of plate ill in the proper position. The inside face of metre her is slotted in line with channel lid, to accommodate the full length of the card holder trunnions, thereby permitting card holders to he slipped in'or out of the magazine through channel tit and the corresponding channel on the other side of the device.

The card holders or cards are held in magazine fill by an escapement mechanism id which permits but one card holder to be released at a time. This escapernent mechanism is shown in detail in Figs. 12, i3, and i4 and its operation will be set forth hereinafter. lhis escapement mechanism it has a release and a hold position, as will ter. be described, and is positioned under control of lever dd which is pivoted at point till. The arm ll is provided with a roller, or oamrnlng meanatlt which, during the reciprocating up and down motion of the arm't'l, passes over the lever it and causes this lever to move thereby actuating the card escapement mechanism dd in the manner hereinafterv set forth. During the down-stroke of arm ii, the passage of roller it over lever it causes the escapement mechanism to' release one card holder which rides on its trunnions down the channeled guide dB to the point 5%.

Attached to the inside of the free end of the arm 21! is a projecting member lid one end of which is bent to form a cup as illustrated in Fig.5. A similar projecting member (member t l shown in Fig. 12) is attached to the free end of the oppositely located reciprocating arm Ti on the other side of the device. The function of member 64 is to provide a seat for one of the card holder trunnions, such as trunnion 52 of card holder 5!, during part of the down-stroke of arm-2'! as well as during the entire up-stroke of arm 21.. In addition, the cupped end 65 of member ti acts as a stop guide-during the up-stroke clockwise direction.

of arm 2i and prevents the card-holder trunnion 52 from improperly entering the. lower portion of channeled guide Mi on passing the point t6 when it is being conveyed from the projection point M back to the storage magazine 25. This latter function of member lid is more clearly illustrated in Fig. 8, a description of which will be set forth hereinafter.

When the card-holder M is released from the magazine 25, it drops by gravity to point hill where its trunnions 52 and ti rest on members M and lit (the latter shown in Fig. 12) of the downward moving arms ill and ill (the latter also shown in Fig. l2) The continued downward motion of arm 2i and the corresponding arm ill on the opposite side of the magazine 25 conveys the released advertising card holder hi from point dd into the upper portion of the projection field (the held between the points indicated by the dotted lines D, D) of the projector and then to the projection point lid. Here the card holder at is superimposed across the upper portion of the printed page it. The card holder hi is prevented irom dropping any lower into the proiecticn field D, D by its trunnion t2 resting on the bottom of the slot of the channeled guide dd.

As the arm ll continues to travel a short distance further toward the end of its downward stroke, the projecting member til presses against control lever db and causes the shaft til, to which this lever till is attached, to move in a counterllhis movement of shaft ht causes the lug til which is attached to the other end of shaft lit to move in a downward direction and exert a downward pull on spring dd. The pull exerted on spring Ed is stronger than the pull exerted by spring hill and causes cam hil to contact the card holder Soil and to press it firmly in place against plate ill. Thus, when the control lever moves earn from its normally unoperated position to its operated position, cam

. holds the card holder ti from vibrating and moving out of focus during the case-shift and line-shift operations of the printer iii. A similar holding means for preventing jiggling, vibrating, and moving of a card holder is located at the other side of the projection field D, D. This second holding means includes a lever, spring, and cam assembly similar to that just described and serves to hold the other side of the advertising card holder hi firmly in place during the projection of its card. This second cam assembly is actuated by the oppositely located arm ill, corresponding to arm 27], in a manner identical with that lust set forth above.

When an advertising card holder 5i is at the projection point it of the projector and is held rigidly against plate "it by earns 59, it is necessary to keep'the card holder ti from contacting with the paper strip it in order to permit free movement of paper strip it during the line-shift and case-shift operations of printer ii). To this end, plate i9 is provided with a paper channel iii recessed to a depth slightly greater than the thickness of the paper strip i5 as is illustrated in detail in Figs. 6 and 7. In the front view of plate i9, shown in Fig. 6, the paper strip i5 may be seen in the recessed paper channel ill of plate 19. The left and right portions of plate 19 are in a plane slightly in front and ahead of the plane of the surface of the paper strip 15 and it is on these left and right portions of plate ii! that the card holder 5| is pressed when-being held by cams 59 and 59 in the projection, or disv play, position. 7 Fig. 7, which-is an edgewise view of plate 19, shows a card holder 5| superimposed across the face of the paper strip l5 and held against plate 19 by the cams 59 and 59', the

' paper strip |5 being free to move behind the card holder 5| in the recessed channel I of plate 19.

After an interval of time determined by the speed of motor 29, the cam 28 causes the arm 21 and the corresponding oppositely located arm 21' to move upward. When projecting member 64 of arm 21 leaves lever 55, this lever 55 returns to its initial position allowing lug 51 to do the same. Spring 80 thereupon pulls cam 59 back to its initial unoperated position thus removing the pressure from the card holder 5|. At the same time, the oppositely located card pressure assembly similarly returns to its initial position. As the arm 21 now moves upward, it picks the card holder 5| up by its trunnion 52 and the oppositely located arm (arm 21' in Fig. 12) picks up the other end of the card holder 5| by the trunnion 52' on that side.

The arms 21 and 21' convey the card holder 5| to the top of magazine 25, the trunnions 52 and 52' of the card holder 5| being carried by arms 21 and 21' and following the upper channeled guide 6|. reaches the point 62, itdrops from arms 21 and 21', falls into the lower channeled guide 48, and returns by gravity to the lower part of the storage magazine 25. When arm 21 passes thelever 44 during its up-stroke, the roller 46 rides over lever 44 and causes it to move and actuate the escapement mechanism 49 in a manner to be described hereinafter. The escapement mechanism 49 positions the next card holder 53 in the magazine 25 for its proper release upon the subsequent down-stroke of arm 21. The detailed functioning of the escapement mechanism 49 will be fully described hereinafter.-

For a clearer understanding of the functioning of the reciprocating arms 21 and 21' during the card-shifting operations, reference may be had to Figs. 8 to 11, inclusive, which show various positions of the arm 21 and of the eccentric driving cam 28 at different stages of the shifting operations.

In Fig. 8, the arm 21 is shown in the midst of its up-stroke. This arm 21, together with the oppositely located arm 21' (not shown here), is carrying the previously displayed card holder 5| by the trunnion 52. Roller, or cam 46 on arm 21 has contacted lever 44 and is about to move that lever. (in a manner which will be described in detail hereinafter) for the purpose of actuating the escapement mechapism 49. From the position of arm 21 in this figure it may be noted that the cupped end 65 of member 64 of this arm acts as a stop guide for trunnion 52 when this trunnion 52 passes point 66 thereby preventing the trunnion 52 from improperly entering and riding in the lower portion of the channeled guide 48.

In Fig. 9, the arm 21 is shown at the highest point of its up-stroke, the card holder 5| having been carried to point 62 by its trunnion 52 riding in the upper channeled guide 6|. From point 62, the card holder 5| drops down through the upper portion of the channeled guide 6| into the card storage magazine 25 by gravity, trunnion 52 riding in the upper portion of the channeled guide 48. When roller 46 passed across the upper portion of lever 44, it caused this lever 44 to move and actuated the escapement mechanism 49 in a manner which will be set forth in When the card holder 5| detail hereinafter. Fig. 9 also shows the apparatus in the condition where the escapement mechanism 49 functioned and moved the next card holder in the magazine, card holder 53, forward and is holding this card holder 53 in the position shown in dotted lines in Fig. 9 from which point it will be released upon the subsequent down-stroke of arm 21.

Fig. 10 shows arm 21 during its subsequent down-stroke just previously referred to. Roller 46 is contacting lever 44 and has moved this lever 44 which in turn has actuated the escapement mechanism 49. This mechanism 49 shifts from its hold to its release position, as will be fully explained hereinafter, and releases the card holder 53 which drops by gravity until its trunnion 54 rests on member 64 of arm 21 at point 63. The card holder 53 is then conveyed to the projection point of the projector by the continued downward motion of arm 21 and of the corresponding arm 21 (not shown) on the opposite side of the device.

In Fig. 11, the arm 21 is shown near the termination of its down-stroke. The card holder 53 is now at the projection point 30 of the projector, its downward movement having been stopped when trunnion 54 reached the bottom of guide 48. The arm 21 as pictured in this figure has still a short distance to travel downward after which its projecting member 64 depresses lever 55. Downward movement of lever 55 will cause cam 59 to press the card holder 53 firmly into place against the outer edges of plate 19 in the manner described above in connection with the description of the operation of the apparatus shown in Fig. 4.

Referring now to Fig. 12, there is disclosed a rear view of part of the invention showing the entire card-shifting mechanism located on both sides of the storage magazine 25. The driving motor 29, the associated reduction gears, and a portion of drive shaft 43 have been deleted from this figure for clarity. The card-shifting arms 21 and 21' are connected to opposite ends of shaft which extends beyond the ends of magazine 25. Arm 21 is coupled to cam 28 by means of a trunnion, or roller bearing 4| which is attached to the arm 21 and which rides in the channel, or guide, 42 cut into the face of cam 28. In rotating, cam 28 imparts an up and down reciprocating motion to arm 21 and also, through the medium of the common connecting shaft 40, to arm 21'. Arms 21 and 21 are similar, as previously noted, but arm 21 is not equipped with a. camming means, or roller, 46 because the escapement control lever 44, which is actuated by roller 46, has no oppositely located counterpart.

The card holder escapement mechanism is shown in its release position in Fig. 12. Itcomprises a cam, or control lever, 44, a rod 61 attached thereto at the pivot 69, and a pair of bifurcated fingers, or members, 68 and 68' mounted on pivots 1| and 1| at opposite ends of storage magazine 25. -Rod 61. is slotted at the points 10 and 10' and the members 68 and 68' are fitted into these slots in such a manner that the horizontal movement of rod 61, under the control of lever 44, causes the members 68 and 68 to shift on their pivots 1| and 1| from right-to left or vice versa so that either the right or the left fingers of these members 68 and 68' are in the vertical position and in contact with a card holder, such as the holder 53.

One of the fingers, or prongs, of each of the bifurcated members 68 and 68' (the left fingers H4 and 4' as shown in the rear view in Fig. 12) is bent at point 12 (or 12') in such a manner that its end is set back with respect-to the end of the unbent finger H3 or H3 associated with it so that the two prongs lie in two diiferent planes. This construction can be better understood by considering the left fingers H4 and 4' as being bent forward from the plane of Fig. 12. In this release position of the escapement mechanism, the bent or left finger H4 or N4 of each of the bifurcated members 68 and 68' passes straight down in front of the card holder of the next advertising card to be displayed. This prevents the card holder, such as the card holder 53, from dropping into the lower channeled guide 48 leading to the projection point 30. The reason for thus holding back card holder 53 is that the previously released card holder 5| has just been conveyed to the projection point 3|] by the downward movement of arms 21 and 21.

As is shown in Fig. 12, the reciprocating arms 21 and 21' are now at the bottom of their downstroke and their projecting members 64 and 64 have depressed levers 55 and 55'. These levers 55 and 55 have caused cams 59 and 59" to press card holder 5| against the plate 19 (shown in Figs. 4, 6, and'l) in the manner described above thus preventing any vibration of the card. holder 5| and thereby maintaining the advertising card in proper focus during the time that it is being projected.

Lever 13 is pivotally connected to the rod 61 by pivot 15 and is also pivotally connected to the stationary connecting member 84 by pivot '14. Fastened to lever I3 at point I1 is one end of a spring 16 the other end of which is fastened at point 18 to the stationary member 84. The function of lever 13 andspring I6 is to assist in the positioning of rod 61 and the bifurcated members 68 and 68. Lever l3 and spring 16 also serve as an off-center holding device for rod 61 and fingers 6868' to prevent them from floating once they have been positioned by the operation of the escapement control lever 44 during the passage of roller 46 of arm 21 over lever 44.

As rod 61 moves from left to right, or vice versa, under control of the movement of lever 44 lever 13 .moves on its pivot 14 with a motion corresponding to that of lever 44. When lever 13 advances past its center, or, vertical, position, the tensile force of spring 16 pushes lever 13, rod 61, and lever 44 completely to the right or left position as the case may be. This serves to hold rod 61, fingers 68 and 68', and levers l3 and 44 in that position until the subsequent up or downstroke of arm 21' causes roller 46 to move levermechanism during the release of a card holder from the storage magazine 25on the downward stroke of the reciprocating arms 21 and 21'. Only that portion of arm 21 to which the roller 46 is attached is shown since the card holder conveying function of this arm 21 and the oppositely located arm 21' has been fully illustrated and de scribed hereinbefore.

When roller'46 ofarm 21 contacts the lower .side of lever 44 (as illustrated by the dotted-lines) it moves lever 44 on its pivot 45 to its full-line position thereby pulling rod 61 to theleft. Lever Q 13 moves in unison-with lever 44 and, as it passes its center position, the action of spring 16 causes lever 13, rod 61, the bifurcated members 68 and 68',and lever 44 to assume the positions shown here. Up to this point, card holder 5| was held in the storage magazine 25 by the straight fingers H3 and I I3 (shown here at the left) which were then in their vertical position and hanging down in front of the card holder 5| to prevent it from sliding out of magazine 25.

As members 68 and 68 now move clockwise on their pivots II and 1|, the left fingers H3 and H3 move clockwise in an arc from their position in front of card holder 5| to a higher position at the left thereby freeing card holder 5|. Card holder 5| is now free to drop by gravity into the lower channeled guide 48 and to be conveyed to the projection point 30 by arms 21 and 21 as previously described. The right fingers H4 and 4', which are bent so that they lie in a plane in back of the left. fingers H3 and 3', move clockwise in an arc downward until they are practically in a vertical position (as shown in Fig. 13). In so moving, fingers l4 and 4' pass behind the released card holder 5| and in front of the succeeding card holder 53 to prevent card holder 53 from leaving the storage magazine 25 at this time.

Fig. 14 shows the escapement mechanism in its hold position during the up-stroke of arm 2'5 and holding card holder 53 which will be released for projection upon the subsequent downstroke of arm 21. For clarity of illustration, the card holder 5| which has just previously been displayed and is now being returned to the storage magazine 25 by the upward movement of the arms 21 and 21' is not shown, this phase of the cardshifting operation having previously been described in detail.

As roller 46 of arm 21 contacts the upper side of lever 44 (as indicated by the dotted lines in Fig. 14), it moves lever 44 to its full-line position thereby pushing rod 61 to the right. Lever 13 moves in unison with lever 44 and, as it passes its vertical center position, the action of spring 16 causes lever 13, rod 6'1, the members 68 and 68', and lever 44 to assume the positions shown here. During the movement of rod 61, the members 68 and 68' move counter-clockwise on their pivots 1| and H and cause the bent fingers H4 and 4' to move upward from in front of the card holder 53. This allows the card holder 53 to drop forward slightly by gravity, and to come to rest against the straight fingers H3 and H3 which have now moved downward so that they are in a vertical position. The card holder 53 will now be held behind fingers H3 and I I3 until the next down-stroke of arm 2'! shifts the escapement mechanism to its release position. This procedure will be repeated until the driving power is shut off.

A modified arrangement for actuating the card holder escapement mechanism of this invention is disclosed in Figs. 15, 16, and 17. The difference between this modification and the preferred arrangemen't described above lies in the manner in which motion is imparted to rod 61 and its associated bifurcated members 68 and 68 in effecting the release of a card holder from the storage magazine 25 of the device.

Fig. 15 shows a side view of the modified arrangement and corresponds, with respect to the relative location of the various parts of the invention, to the view shown in Fig. 4 of the preferred arrangement for actuating the card-shiftmg mechanism. a Two arms, arm 86 and a correshown in Figs. 4 and 8 to 11, inclusive.

sponding oppositely located arm (not shown), are fastened to-the opposite ends of shaft 88, these arms corresponding functionally to the previously illustrated and described arms 21 and 21. Arm 86 is provided with a roller bearing 4| which is identical with roller bearing ll of arm 21 as bearing 4| rides in the channel 42 of the eccentric cam 28 with the result that the rotation of cam 28 imparts an up and down reciprocating motion to arm 86 and, through the medium of shaft 40, to the oppositely located arm (not shown). These arms convey the card holders seriatim to the projection field of the projector and return them to the storage magazine 26 in a manner identical with that described above for arms 21 and 21' and no further description of this card conveying phase need be given.

Referring now to Fig. 16, which is a cross-sectional view of Fig. 15 taken on the line l6-l6, the manner in which the card holder escapement mechanism is actuated during the reciprocating motion of arm 86, will now be described. A semicircular cam 86 is fastened to the inside of arm 86 by studs 89. The card holder escapement rod 61, which positions the bifurcated members 68 and 68 (not shown in these figures) in the manner already fully described above, is provided at one end with a pin which is fitted into the slotted end SI of lever 82. Lever 82 is pivoted on pivot 83 attached to the projecting member 84 fastened to the side plate 82. The other end of lever 92, as well as one end of member attached thereto, is cut out to form a slot 96. A roller bearing 81 is provided in each inside face of slot 86, and the outer faces of cam 88 ride in slot 96 between these roller-bearings 81.

The outer edge of cam 88 is cut so that the upper and lower portions of this edge (in respect to the position of the cam 88 as shown in Fig. 15) are in different planes with respect to each other as well as with respect to the inner portion of the body of cam 88. Fig. 17 discloses an end view of cam 88 taken along the line ||--l| of Fig. 15 and illustrates the relative position of these outer faces of cam 88 with respect to its straight central portion 98 which is fastened to arm 86 by the studs 88.

Since the roller bearings 81 in slot 86 of lever 82 ride over the outer faces of cam 88, the bent surface of the cam edge causes lever 92 to move on its pivot 83 during the up and down strokes of arm 86. This movement of lever 92 is communicated to the rod 61 through the medium of slot 9| and pin 88. Rod 61 in turn controls the positioning of the bifurcated members 68 and 68 (shown in Figs. 12, 13, and 14) so that the card holders are held and released in a manner similar to that described above in connection with the description of the operation of the invention using the preferred form of control for actuating the escapement mechanism. It is to be understood that other modifications of the invention may be made without departing from the principles and features of operation of the invention which are to be limited only by the claims appended hereto.

What is claimed is:

1. An exhibiting device including in combination a display area, a projection point, projecting means including a mirror for projecting onto the display area an image of display material located at the projection point, illuminating means interposed between the mirror and the projection point for illuminating display mate- This rial located at the projection point and for conditioning said display material for projection onto the display area, primary display material continuously located at the projection point for illumination by the illuminating means and for projection onto the display area by the projecting means, secondary display material normally located away from the projection point, and conveying means for intermittently and alternately carrying the secondary display material toward and from, the projection point for momentary illumination by the illuminating means and for momentary projection onto the display area by the projecting means, said conveying means including an arm for actually conveying the secondary display material, an eccentric cam for imparting a reciprocating motion to the arm, and a motor for rotating the cam.

2. An exhibiting device including in combination a display area, a projection point, projecting means including a mirror for projecting onto the display area an image of display material located at the projection point, illuminating means interposed between the mirror and the projection point for illuminating display material located at the projection point and for conditioning said display material for projection onto the display area, primary display material continuously located at the projection joint for illumination by the illuminating means and for projection onto the display area by the projecting means, secondary point for momentary illumination by the illu-,

minating means and for momentary projection onto the display area by the projecting means, said conveying means comprising an eccentric cam having a groove in one of its sides, a motor for rotating the cam, an arm for actually conveying the secondary display material, and a trunnion having one end attached to the arm and another end fitted into the groove in the cam for transmitting the motion of the cam to the arm for conveying the secondary display material.

3. An exhibiting device including in combination a display area, a projection point, projecting means including a mirror for projecting onto the display area an image of display material located at the projection point, illuminating means interposed between the mirror and the projection point for illuminating display material located at the projection point and for conditioning said display material for projection onto the display area, primary display material continuously located at the projection point for illumination by the illuminating means and for projection onto the display area by the projecting means, secondary display material comprising a plurality of display cards, a storage magazine for storing the display cards, an escapement device for releasing the cards one at a time from the storage magazine, and an arm for intermittently and alternately conveying the cards seriatim from the storage magazine toward and from a superimposed position across the face of the primary display material at the projection point, said escapement device comprising a pivotally mounted bifurcated finger having one of its prongs spaced in advance of the other relative to the plane of a card in the storage magazine, said bifurcated finger having a hold position for enabling one of the prongs to hold back all the cards in the storage magazine and a release position for enabling the a saeoe I veyance by the arm to the projection point for momentary illumination by the illuminating means and for momentary projection onto the display area by the projecting means.

l. lln exhibiting device including in combination a display area, a projection point, projecting means including a mirror for projecting onto the display area an image of display material located at the projection point, illuminating means interposed between the mirror and the projection point for illuminating display material located at the projection point and for conditioning said display material for projection onto the display area primary display material continuously located at the projection point for illumination by the illuminating means and for projection on to the display area hy the projecting means, secondary display material comprising a plurality of display cards, a storage magazine for storing the display cards, an escapement device for releasing the cards one at a time from the storage magaaine, and a reciprocating arm for intermittently and alternately conveying the cards seriatirn from the storagev magazine toward and from a superimposed position across the lace oi the primary display material at the projection point, driving means for driving the reciprocating arm, said escapernent device comprising a'pivotally mounted loiiurcated ger having a hold position and release posi- ;ion for releasing the cards one one to the reciprocating arm tor conveyance to the projection point for momentary illumination by the illuminating means and for momentary projection onto the display area by the projecting means, and a oamrning means mounted on said conveying arm for shifting the finger from one position to the other during the ricprocating movement oi the arm.

An eirhihiting device including in combination a display area, a projection point, project ring means for projecting onto the display area an image of display material located at the projection point, primary display material continu ously located at the projection point for projection onto the display area by the projecting means, secondary display material comprising a plurality of display cards, storing means for storing the cards, conveying means for conveying the cards seriatim from the storing means to superimposed position across the face of the primary display material for projection onto the display area by the projecting means, and instruincntalities for bringing a superimposed card into focus for projection by the projecting means and for preventing it from jiggling during the period of its projection, said instrumentalities including a cam for compressing a portion of a superimposed card against the primary display material at the projection point to form antijiggling holding means.

6. An exhibiting device including in combination a display area, a projection point, projecting means for projecting onto the display area an image of display material located at the lug means, secondary display material compris-' ing a plurality of display cards, a storage magasine for storing the cards, conveying means for conveying, the cards serlatim from the storage reciprocating arm,

magazine to a superimposed position across the face of ,the primary display material for projection onto the display area by the projecting means, and instrumentalities for bringing a superimposed card into focus for projection by the projecting means and for preventing. it from vibrating during the period of its projection, said instrumentalities comprising a plurality of cams for compressing portions of a superimposed card firmly against the primary display material at the projection point to form anti-vibrating holding means.

-7. An exhibiting device including in combination a display area, a projection point, pro-- jecting means for projecting onto the display area an image of display material located at the projection point, primary display material continuously located at the projection point for projection onto the display area by the project ing means, secondary display material comprising a plurality of cards, a storage magazine for storing the cards, a reciprocating arm for lntermittently conveying the cards seriatim from the storage magazine to a superimposed position across the lace of the primary display material for projection onto the display area by the projecting means; driving means for driving the and instrumentalities for bringing a superimposed card into focus for projection 'hy the projecting means and for preventing it from moving While being projected, said instrumentalities comp-rising a-cam device for pressing a superimposed card firmly against the primary display material at the projection point to form anti-jiggling holding means, said cam device having an operated position and an unoperated position, and a control lever operable hy the conveying arm for shifting the cam device from one oi its positions to the other during the reciprocating movement of the arm.

an image projecting and. display device having a single display screen for displaying in combination thereon images of two different types of display material one of which is displayed continuously and the other at regular intervals, said image projecting and display device comprising a projection point lor supporting both. types of display material in position for projection thereof, illuminating means for'illuminating the projection point and the display ma terial thereat, an optical system for projecting an image of the display material at the projection point on to the singles display screen, primary display material, supporting means for supporting said primary display material in said image projecting and display device, means for maintaining some of said primary display material constantly at the projection point during the periodof operation of the image projecting and display device for projection thereof by said optical system, secondary display material comprising a plurality of movable display slides, holding means for holding said display slides in the image projecting and display device in a location away from the projection point, and

conveying means for intermittently and alternately carrying the movable display slides toward and from the projection point at regular intervalsfo-r momentary illumination'by said illuminating means and for momentary projecoil combination thereon images of two diflerent types of display material one of which is displayed continuously and the other at regular intervals, said image projecting and display device comprising a projection point for supporting both types of display material in position for projection thereof, illuminating means for illuminating the projection point and the display material thereat, an optical system for projecting an image of the display material at the projection point on to the single display screen, primary display material, supporting means for supporting said primary display material in said image projecting and display device, means for maintaining some of said primary display material constantly at the projection point during the period of operation of the image projecting and display device for projection thereof by saidoptical system, secondary display material comprising a plurality of movable display slides, holding means for holding said display slides in the image projecting and display device in a location away from the projection point, and conveying means for intermittently and alternately carrying the movable display slides toward and from the projection point at regular intervals for momentary superimposition over a portion of said primary display material at the projection point at regular interva s for momentary illumination by said illuminating means and for momentary projection of their images by said optical system on to the display screen in combination with the image of the primary display material.

10. An image projecting and display device having a single display screen for displaying in combination thereon images of two different types of display material one of which is displayed continuously and the other at regular intervals, said image projecting and display device comprising a projection point for supporting both types of display material in position for projection thereof, illuminating means for illuminating the projection point and the display material thereat, an optical system for projecting an image of the display material at the,

comprising movable slides, holding means for holding said slides in storage above the projection point, and conveying means for intermittently conveying the slides one by one at a rate slower than gravity toward and from the superimposed position over a period of said primary display material at the projection point for momentary illumination by said illuminating means and for momentary projection of its image by said optical system on to the display screen in combination with the image of the primary, display material.

11. An image projecting and display device having a single display screen for displaying in combination thereon images of two different types of display material one of which is displayed continuously and the other at regular intervals, said image projecting and display device comprising a projection point for supporting both types of display material in'position for projection thereof, illuminating means for illuminating the projection point and the display material thereat, an optical system for projecting an image of the display material at the projection point on to the single display screen, primary display material, supporting means for supporting said primary display material in said image projecting and display device, means for maintaining some of said primary display material constantly at the projection point during the period of operation of the image projecting and display device for projection thereof by said optical system, a plurality of display slides having trunnions attached thereto, a storage magazine for storing the slides, channeled guides for slidably receiving the trunnions attached to the slides a plurality of reciprocating arms for engaging with said trunnions for intermittently and alternately moving the slides seriatim along the channeled guides from the storage magazine for momentary superimposition over a portion of said primary display material at the projection point for momentary illumination by said illuminating means and for momentary projection of the primary display material.

. 12. An image projecting and display device having a single display screen for displaying in combination thereon images of news material and advertising material, the news material being displayed continuously and the advertising material being displayed at regular intervals, said image projecting and display device comprising a projection point for supporting both the news and advertising material in position for projection thereof, illuminating means for illuminating the projection point and the news and advertising material thereat, an optical system for projecting images of the news and advertising material at the projection point on to the single display screen, a teletypewriter' for printing news information upon page stationery, feeding means for continuously feeding the printed page stationery past the projection point for maintaining some of said printed page stastionery constantly at the projection point during the period of operation of the image projecting and display device for projection thereof by said optical system, a plurality of advertising cards, holding means for holding said advertising cards in the image projecting and display device in a location away from the projection point, and conveying means for intermittently and alternately carrying the advertising cards one by one toward and from the projection point at regular intervals for momentary superimposition over a portion of the printed page stationery located at the projection point for momentary illumination by said illuminating means andfor momentary projection of its image by said optical system on to the display screen in combination with the image of the news material.

GEORGE E. ATKINS. 

